Paper test device-removal means



Oct. 29, 1963 w. A. PATZER 3,108,692

PAPER TEST DEVICE REMOVAL MEANS Filed May 2, 1958 5 Sheets-Sheet 1 INVENT OR.

I I WlZZz'am APazZer zm m wafaz f 4 544 40 YW aizornays Oct. 29, 1963 w. A. PATZER 3,108,692

PAPER TEST DEVICE REMOVAL MEANS Filed May 2. 1958 5 Sheets-Sheet 2 INVENTOR.

William H. Pager az'forne 9'5 Oct. 29, 1963 w. A. PATZER 3,108,692

PAPER TEST DEVICE REMOVAL MEANS Filed May 2, 1958 5 Sheets-Sheet 3 FIG-,5

INVENTOR.

Oct. 29, 1963 w. A. PATZER 3,108,692

PAPER TEST DEVICE REMOVAL MEANS Filed May 2. 1958 FIG- 4 5 Sheets-Sheet 4 l I I I l INVENTOR. William A. Page! afzorn e55 w. A. PATZER PAPER TEST DEVICE REMOVAL MEANS Oct. 29, 1963 5 Sheets-Sheet 5 Filed May 2, 1958 NON INVENTOR William A. Pager BY az'iarne 1 5 United States Patent 3,168,692 PAPER TEST DEVICE-REMOVAL MEANS William A. Patzer, Chicago, Ill., assignor, by mesne assignments, to Automatic Canteen Company of America, Chicago, Ill., a corporation of Delaware Filed May 2, 1958, Ser. No. 732,671 15 Claims. (Cl. 209-1115) This invention relates to a device for the acceptance of paper or currency of a particular designation and it relates more particularly to a stripping means for achieving the removal of the paper or currency found to be acceptable upon test.

As used herein, the term paper or currency is intended to refer to paper, plastic, board, wood, metal and the like sheets or films cut to a predetermined dimension and provided with certain configurations, indicia or designs imprinted or otherwise embodied in or on the surface whereby one paper can be separated from another, such as in currency of various denominations of the United States or countries foreign to the United States, or in bank checks wherein separation can be made from the standpoint of the payee, payor, or the amount of the check, or as in tickets or stubs, amusement, sale, purchase or the like.

In a test device of the type described, it is essential to enclose the test area to prevent access thereto. While it is'desirable to provide means for the displacement of the paper from a receiving position outside of the housmg to a test position within the housing, it is desirable also to embody a means in the device to effect the removal of acceptable paper while in the test area and preferably before return of the displacement means to starting position outside of the housing. This will all ap pear to be quite practical for the successful operation of the device, otherwise the user could tamper with the paper to prevent removal upon acceptance and thereby cheat the device.

It is an object of this invention to produce a test device of the type described which is simple in construction and easy in operation, and it is a related object to provide a stripping means operative upon completion of the tests to effect removal of the paper found to be acceptable.

More specifically, it is an object of this invention to produce a test device for paper of the type described which is adapted to accept the paper for a test in a carrier outside an enclosed test area and operative to enable displacement of the carrier with the paper to a position within an enclosed test area and to effect removal of acceptable paper from the carrier prior to its return to starting position upon completion of the test.

These and other objects and advantages of this invention will hereinafter appear and for purposes of illustration, but not of limitation, an embodiment of the invention is shown in the accompanying drawings in which- FIG. 1 is an elevational view of the interior portion of a test device embodying the features of this invention;

FIG. 2 is a top view of the test device shown in FIG. 1

with portions broken away for full illustration of elements embodied therein; 7

FIG. 3 is a plan view from the underside of the test device shown in FIG. 1;

FIG. 4 is a sectional view taken substantially along the line 44 of FIG. 2;

FIG. 5 is a sectional elevational view taken along the line 5-5 of FIG. 2;

FIG. 6 is a sectional View similar to that of FIG. 5 taken with the slide plate in position of test, and

FIG. 7 is an electrical diagram employed in the test? ing-device of FIG. 1, portions of which will be described with reference to the concepts described and claimed in this application.

3,1b8fi92 Patented Oct. 29, 1963 "ice The concepts of this invention will be described with reference to a new and improved means for testing based upon light transmission through pre-selected areas of the paper as defined in my copending application Ser. No. 676,527, filed August 6, 1957, now U.S. Patent No. 2,- 961,898, and as further defined in my copending applications entitled, Currency Testing and Selecting Device,

now U.S. Patent No. 2,967,452, granted January 10, 1961 and Test Device for Printed Papers and Elements of Same, now U.S. Patent No. 2,957,387, granted October 25, 1960. It will be understood that the means for stripping the carrier of the paper to effect removal is not dependent upon the particular test system but may equally be employed in devices embodying other means for testing to effect separation or acceptance of paper or currency or the like. Thus, while the figures will illustrate the various elements embodied in a device embodying the light transmission test, only those elements directly and indirectly related to the stripping mechanism or removal means will be referred to specifically in the following description.

Referring now to the drawings, the numeral Iii refers to a housing supported on a base 12 in the form of a flat table which extends into the housing from a substantial distance rearwardly thereof. Within the housing there are provided a number of light sources in the form of lamps 14 extending downwardly toward the top surface of the table and spaced a short distance therefrom. In the area underlying the lamps 14, the table is provided with a plurality of openings 16 each of which has a light responsive cell 18 in position to receive light entering the openings.

The openings themselves are arranged in a predetermined pattern -to underlie pro-selected areas of the paper some of which are capable of high light transmission while others are characterized by lesser amounts of light transmission to set up a predetermined set of conditions for controlling the response of the light cells when the paper or currency 20 is properly arranged in position of test between the light source and the openings themselves.

A slide plate 22 is mounted for reciprocal movement between channel guides 24 fixed to the top surface of the table to enable displacement over the table from normal retracted position, shown by solid lines in FIG. 2, to a position of test within the housing, shown by the broken lines in FIG. 2. Mechanical means may be employed for actuation of the slide plate between normal and test positions of adjustment but, in the illustrated modification, a handle 26 is provided for actuation of the slide on the rearward end portion of the slide plate for displacement of the latter manually into the housing to position of test. Other means such as coil springs 28 secured at one end to a bracket 30 fixed to the forward ends of the slide plate and at the other end to a stud 32 rigid with the housing operate constantly to urge the slide plate towards its normal or retracted position. Latching means, more specifically described in the aforementioned U.S. Patent No..2,9 57,387, operates to hold the slide plate in test position until the tests have been completed to determine the acceptance of the paper and until the removal has been effected of the paper or ourrency found to be acceptable. The latching means is adapted to be released upon completion of the operation of the stripper to enable return of the slide plate to normal position with or without the paper, depending upon the acceptability thereof.

As defined in the aforementioned U.S. Patent No. 2,957,387, the latching means is rendered effective when a paper or currency of :the desired dimension is present in the slide in position to be tested. Such determination is made by fingers 34 extending upwardly beyond the surface of the table 12 in position to be engaged by the leading edge of the paper 20 during advancement with the slide from normal to test position. If all of the test fingers 34 which are arranged in laterally spaced apart relation are operatively engaged by the paper to effect displacement to make the switches 36 connected in series, a lock solenoid 38 is energized to effect rocking movement of a latching lever 43 about its pivot on the table to bring a latching finger 42 on the end of the latching lever into the path of a block 44 secured to the underside of the slide plate to hold the slide plate in test position. The lock solenoid 38 is inactivated upon completion of the test and operation of the stripper or removal means to enable the latching lever 40 to be rocked about its pivot to unlatching position whereby the latching finger is withdrawn from the path of the block to enable the coil springs 28 to become effective for return of the slide plate to starting position.

The slide plate 22 is provided with an opening 46 extending therethrough dimensioned to receive the paper. The opening is positioned in the slide plate in a manner to be located outside of the housing when the slide plate is in normal position to permit access for the insertion or removal of the paper and to be located within the test area between the light source and the light responsive cells, when in test position.

A door 48, mounted for rocking movement about one of its edges between raised and lowered positions of adjustment, operates to hold the paper in proper position within the opening of the slide plate when in lowered position within the opening. In order to enable light from the light source 14 to strike the paper when in test position, the door 48 is provided with openings 50 in vertical alignment with the openings in the table and the light responsive cells.

Having described much of the environment which could be employed in any other test system, description will now be made of the concepts of this invention for stripping the paper from the slide plate to effect removal. Referring more specifically to FIGS. 4 and of the drawings, a supporting plate 6ft is fixed as by screws 62 to the top wall 64 of the housing so as to extend vertically downwardly in endwise alignment with the slide plate in an intermediate portion of the test area and preferably in the central portion thereof. The supporting plate 66 extends downwardly for a distance short of the table and it is rigidly supported in position by means of a flange '66 at the upper end which abuts against and is fixed to the underside of the top wall of the housing.

Mounted for vertical movement relative to the supporting plate is an ejector member 68 in the form of a flat plate having an elongate vertically disposed slot 70 therein adapted to receive vertically spaced apart headed studs 72 fixed to the supporting plate for guiding the ejector in vertical movement between raised and lowered positions of adjustment. It will be understood that the desired guiding relationship can be achieved by interchange to provide the slot 70 in the supporting plate 60 for receiving studs fixed to the ejector plate.

The lowermost of theheaded studs 72 is adapted to be received in the lower end portion of the slot to stop the ejector in raised position while the uppermost of the headed studs 72 is preferably positioned to be received in the upper end portion of the slot to operate as an effective stop for the ejector in its lowered position. Displacement of the ejector plate between raised and lowered positions of adjustment is effected by means of a lever arm 74 pivoted intermediate its ends on a pivot pin 76 fixed to a lateral portion of the support plate 60. One end of the lever arm is provided with an elongate slot 78 adapted slidably to receive a stud 80 fixed to an upper end portion of the ejector plate. A coil spring 82 is connected at one end to a shaft 84 shiftable into and out of a solenoid 90' fixed by a bracket 92 to the housing. The other end of the coil spring 82 is anchored onto a stud 94 on the free end portion of the lever arm 74 offset from its pivot. Thus the solenoid operates through the coil spring 82 to urge the lever arm to rock about its pivot in the clockwise direction to effect displacement of the ejector plate to its lowered position of adjustment and the force for effecting such movement increases in response to the retraction of the shaft into the solenoid.

Another coil spring 96 secured at one end to the top wall of the housing and anchored at the other end on the stud 80 operates constantly to urge the ejector towards its raised or normal position of adjustment but with a force insufficient to overcome the effective force of the spring 82 when tensioned by retraction of the shaft 83 into the solenoid 90. The spring 96 takes over, however, when the shaft 88 is displaced outwardly to relieve tension on the spring 82 and operates to resiliently urge the ejector toward raised position.

Slots 98 and 160 are provided in the door and in the table respectively in vertical alignment with the ejector plate 68 to enable the lower end portion of the plate to be displaced therethrough to beyond the lower end of the table upon movement from raised to lowered position of adjustment.

A pair of rollers 102 and 104 are mounted beneath the table with the nip 106 in vertical alignment with the ejector plate. The rollers are mounted on shafts 108 and 110 respectively, one of which (108) is journaled in bearings fixed to walls of the housing while the other is rotatably mounted in elongate slots in the housing walls which enables displacement in the direction toward and away from the first. The shafts are interconnected by coil springs 1'12 and 114 constantly to urge the rollers on one shaft into operative engagement with the rollers on the other. The shaft 110 is mounted for free rotational movement in response to force transmitted from the other. In the alternative the shafts may be interconnected by gears or belts to effect concurrent turning movement in opposite directions. Thus the rollers are turned together in a downward direction at the nip to effect downward displacement of the paper 20 when fed into the nip of the rollers by the ejector plate 68 in response to the displacement thereof to a lowered position of adjustment to a position substantially in alignment with the axis of the rollers.

In order to avoid operative engagement between the rollers and the ejector, it is desirable to dimension the ejector plate to have a width less than the width of the paper and to subdivide the rollers into pairs spaced one from the other on the shaft by a distance greater than the width of the ejector plate but less than the width of the paper so that the ejector plate can be displaced into a position between the pairs of rollers while the edges of the paper are brought into engagement between the nip of the rollers, as indicated in FIG. 3 of the drawings.

Reference is made to the copending application Ser. No. 744,966 filed June 27, 1958, and entitled Material Testing Device, for a more detailed description of the control circuit illustrated in FIG. 7 and the operation thereof.

The control circuit of FIG. 7 basically comprises a printed circuit 146 operatively connected to a motor driven rotor to selectively and sequentially energize different networks of the circuit; a lamp lighting network, including lamps 14, coupled to the printed circuit 146 for receiving energization therefrom; a photocell network, including a plurality of switching means con-trolled by the energization of the photocells 202, a paper removal network, including a stripper motor 116 and stripper solenoid 90 coupled through the switching means and printed circuit 146 for removing the paper in response to energization therethrough, a reset network connected to the printed circuit 146 for controlling the switching means in response to signals from the printed npp rnprises a strip er motor" 116" circuit 146, and a power input network for providing energization to the printed circuit .146.

The power input network 119 is connected between the power source 120 and the printed circuit 146 to couple power from the source 120 to the printed circuit 146. The power input network comprises a lead Wire 122 coupled to the power source [120, a bypass wire 124 and a voltage stabilizer 190, each connected to lead wire 122, a transformer 192 coupled to bypass wire 124, and a wire 138 at one end connected to the printed circuit 146 and at the other end coupled to wire 124 over a normally open switch 136. The switch .136 is operatively coupled to the latching means 40, which is controlled by the energization of the lock solenoid 38. A plurality of wires 126, 128, 130, 132 and 1154, conneoted in series, is connected between the energized bypass wire 124 and the lock solenoid 38. Wire 130 is coupled to wire 132 over a normally closed switch 131 m the reset network 220. Wire 132 is coupled to wire 134 over the normally open circuits of switches 36. The coupling is such that both switches 36 must be closed by the operation of a bill on switch fingers 34 to provide a connection between the wires 132, 134.

The printed circuit 146 is connected between power input network and the lighting, paper removing and reset networks for selective and sequential energization thereof. The printed circuit 146 comprises an energizing contact strip 147 connected to wire 1 24 of the power input circuit, a contact strip 148 connected to the lighting net- Work, a contact strip 150 connected to the paper removing network, a contact strip 152 connected to the reset network, and a rotor 145 abutting the energizing strip 147 and capable of abutting each of the contact strips 148, 158, 152 to provide electrical connection between the energizing strip 147 and any one of the contact strips. The rotor is of a length suflicient to extend beyond the innermost projection of each of the contact strips 148, 150,152. The rotor is 'operatively coupled to a timer motor 144 to provide movement thereof to abut different ones of the contact strips 148, 150 and 152. Each of the contact strips 148, 150, 152 extends about substantially one-third of the circumference of the printed circuit 146 without overlapping any of the other contact strips to permit individual energization thereof for a predetermined amount of time by the rotation of rotor 145.

The timer motor 144 is connected over wire 142 and a normally open switch 140a of a starter relay 140 to the wire 124 of the power input network 119, The solenoid 140s of the starter relay 140 is coupled to wire 138 of the power input network to permit energization thereof whenever switch 136 is closed.

The lighting network is connected to the printed oircuit 146 to provide illumination to the photocells 202 in response to the energization thereof by the printed circuit 146. The lighting network comprises a plurality of lamps 14 connected over wire 156 to the printed circuit 146 and coupled over wire 157 to the ground side of the power input network.

The photocells 262 are connected in three banks, each of which is connected to a normally open sensitive relay 222, 222 and 222". Two of these sensitive relays 222, 222' are connected to, and provide energization from the secondary of a transformer when closed, a first solenoid 224. The third sensitive relay 222" is connected to and energizes a second solenoid 226. Each of the solenoids 224, 226 operatively controls associated switch members 224A, 224B, 224C, 226A, 226B and 2260, respectively.

The paper removing network is connected to the contact strip 150 of the printed circuit 146 to effect removal of the paper being tested upon energization of the strip 150 by the rotor 145. The rem stripper solenoid 90; The stripper motor 116 is coupled to the contact twork basically Y of the slide plate.

strip 150 over a pair of wires .164, 166 connected in series, and a pair of switch members 226b, 224b, in the photocell network. The switch 224b is normally closed. As explained in the above described copending application Ser. No. 744,966 filed June 27, 1958, and entitled, Material Testing Device, the switch 2261) will be closed by the solenoid 226 if the bill being tested passses the photocell test. Thus, when switch 22611 is closed, the motor 116 is in electrical contact with contact strip 150 to receive energization therefrom; The stripper motor 116 is operatively connected to a normally open switch 168 by a button 167. The stripper solenoid is coupled over wire 170 and switch 168 to the power input circuit. Thus, when switch 168 is closed by the operation of motor 116, the solenoid 90 is energized o-ver wires 124 and 120.

In operation, starting with the slide plate 22 in retracted position, as shown 'by solid lines in FIGS. 2 and 4, the door 48 can be rocked about its pivot to raised position, shown by the broken lines in FIG. 4. This permits access to the pocket adapted to receive the paper or currency, hereinafter referred to as a dollar bill. After insertion of a dollar bill 20, the door is adapted to be rocked about its pivot to lowered position within the opening to hold the dollar bill down in the pocket The slide plate can now be displaced forwardly to the test position to bring the dollar bill into the housing and in position to be tested. If the paper placed in the pocket of the slide plate is dimensioned to correspond to a dollar bill and if it is laid down flatwise in the opening, independently of its position, that is face up or face down, the leading edge of the dollar bill will engage the switch fingers 34 of the switch members 36 to effect displacement to make the switches. This will enable current to flow from the source through the lines 122, 124, 126, 128, and 132 to the switches 36 and through the switches, when made, into lines 134 to the lock solenoid 38. The lock solenoid will become energized to effect actuation of the latching means 40 todisplace the latching finger 42 into the path of the block 44 to prevent displacement of the slide plate from test position.

Responsive to displacement of the latching lever 40 to latching position, a switch 136 is closed which directs current through line 138 to a starting relay 140. The relay is energized closing switch 140 to enable current to flow through line 142 to a timer motor 144 which actuates a rotor on a printed circuit 146 provided with a contact strip 148 for directing current to the lights, a contact strip 150 for directing current to the stripper solenoid and a contact strip 152 for operating a reset relay 154. The stripper contact 150 follows the light contact 148 to enable operation of the stripper subsequent to the operation of the lights for testing. The reset contact 152 follows the stripper to break the switches made during the described operation. Thus the latching means will remain effective to hold the slide plate in test while the tests are being carried out and while the stripper is being operated to etfect removal of the dollar bill, if the tests have found it to be acceptable.

'It will be apparent that if less than both of the switch fingers 34 are engaged to make the switches 36, current will be incapable of flow as described to the lock solenoid 38. As a result, the lever arm 40 will not be opera-ted to latch the slide in test position. Under such circumstances, the slide plate will be free for immediate return with the paper therein to starting position to enable removal of the paper without operation of the testing elements.

It will be assumed for purposes of discussion that an acceptable dollar bill has been placed into the test area and that the latching means is rendered effective to hold the,.slide, plate in testnposition to the extent that the -timing motor is actuated to eifect rotational movement of the rotor for sequential contact with elements of the printed circuit. While the rotor is in contact with the light strip 148, the lamps 1 4 will receive current through line 156 for illumination. If the areas of the dollar bill overlying the cells 18 connected to the closed contacts 158 and 160 prevent transmission of light in an amount to unmake the switches, the contacts will remain closed and, if the areas of the dollar bill overlying the cells connected to the open contacts 162 permit transmission of an amount of light to make the switches and close the contacts, then upon subsequent contact of the rotor with the stripper portion 150 of the printed circuit, current will flow through the line 164 and through both of the contacts 224b and 226b connected in series to line 166 and to the stripper motor116 to effect turning movement of the shafts 108 and 110 on which the rollers 102 and 104 are mounted.

The stripper motor is of a conventional clutch type which provides for immediate stops when the current is cut off. The shaft in the clutch type motor is displaced upon operation to release the button 167 on a switch 168. When the switch is made, current will flow through line 170 to the stripper solenoid 90 to effect retraction of the shaft 88 with concurrent downward displacement of the ejector plate 68 to its lowered position of adjustment. As the ejector plate is displaced downwardly through the slots of the underlying door and table, it engages the central portion of the dollar bill 20 whereby the bill is folded about in half about the lower edge of the ejector and is carried therewith through the slots into the nip of the underlying pairs of rollers which are being turned by the motor 116. As the edges of the dollar bill are brought into the nip of the rollers, the rollers take over from the ejector to continue displacement of the folded dollar bill for delivery to the underside and into a cash box or receiver (not shown). It it desirable to have some play in the ejector so that it will return slightly from the lowered position to avoid inadvertent spread of the rollers by transmission of force through the displaced bill.

It will be apparent that if one of the switch contacts responsive to the transmission of light is either opened' or allowed to remain open, the current will be incapable of flow to the motor .116 and to the solenoid 90 to cause operation of the stripper mechanism. Under such circumstances, indicating failure of the paper to meet the tests for acceptability, the paper will remain in the slide plate for return with the slide plate to retracted position outside of the housing to enable removal.

If the dollar bill is acceptable or not, the continued turning movement of the rotor on the printed circuit will bring the rotor into contact with the reset strip 152 to enable current to flow through line 170 to the reset relay 154 which operates through lines connected therewith to reset the solenoids and switches thereby to inactivate the lock solenoid and release the slide plate for return by the springs 28 to its normal, retracted position.

It will be apparent that there are numerous elements in the drawings and in the electrical diagram which have not been described since they are tied in directly with the operation of the inventive concepts forming the subject matter of this application. It will be understood that changes may be made in the details of construction, arrangement and operation of the device without departing from the spirit of the invention, especially as defined in the following claims.

I claim:

1. A paper test device of the type described having a fixed paper receiving position and a fixed test position spaced from the paper receiving position, a means for holding the paper in the test position until a test thereon has been evaluated, means f or testing the paper for acceptability, and means responsive" ion of the acceptability of the paper by said tests for effecting removalof the paper found to be acceptable while the 0 holding means if the paper is found to be unacceptable, said means for holding the paper in the test position comprising a slide plate shiftable between said paper receiving and said paper test positions, a latching lever mounted on said test device, said latching lever engaging said slide plate and being shiftable between a latching position and an unlatching position and means for actuating the latching lever to a latching position responsive to movement of the slide plate to the test position when a paper of the desired dimensions is disposed in said slide plate.

2. A paper test device of the type described having a fixed paper receiving position and a fixed test position spaced from the paper receiving position, a means for holding the paper in the test position until a test thereon has been evaluated, means for testing the paper for acceptability, and means responsive to the determination of the acceptability of the paper by said tests for effecting removal of the paper found to be acceptable while the paper is in test position and means for release of said holding means if the paper is found to be unacceptable, said means for effecting removal of the paper comprising an ejector shiftable in a plane perpendicular to the plane of the paper in test position and substantially intermediate the ends thereof, and means for actuating the ejector for movement from a normal to operative position whereby the ejector engages the paper intermediate its ends to fold the paper for displacement with the ejector to operative position.

3. A test device as claimed in claim 2 which includes means cooperating with the ejector and in endwise alignment therewith adjacent the end of the ejector when displaced to operative position to engage the paper displaced by the ejector upon movement to operative position to separate the paper from the ejector.

4. A test device as claimed in claim 2 in which the paper is horizontally disposed on a supporting surface While in test position and in which the ejector is mounted for vertical movement between normal-raised and operated-lowered positions relative to the paper.

5. A test device as claimed in claim 4 in which the ejector comprises a plate dimensioned to have a width less than the width of the paper and aligned crosswise thereof to engage the central portion of the paper intermediate its edges for displacement, and in which the said supporting surface is formed with an aligned slot dimensioned to have a thickness greater than the thickness of the ejector plus two thicknesses of the paper and to have a width greater than the width of the paper to enable passage of the paper downwardly therethrough.

6. A test device as claimed in claim 3 in which the means cooperating with the ejector comprises a pair of rollers rotatable about an axis in alignment with the crosswise direction of the paper and ejector and with the nip of the rollers in endwise alignment with the ejector and in position to receive the paper therein when the ejector is displaced to operated position.

7. A test device as claimed in claim 6 in which the ejector in operated position is at about the same level as the axis of the rollers.

8. A test device as claimed in claim 6 in' which at least one of the rollers is mounted for shifting movement in the direction towards the other and which includes means resiliently urging the rollers in the direc- 3 tion towards each other to effect operative engagement 105 A tesfdevice as claimed in claim 6 in which the v rollers are subdivided into cooperative pairs spaced one paper is in test position and means for release of said' from'the other by a distance greater than the width of the ejector but less than the width of the paper to enable the ejector to be displaced into the space between the spaced rollers While the edges of the paper are received in the bite of the rollers.

11. A test device as claimed in claim 2 which includes means mounting the ejector for reciprocal movement comprising a stationary plate and an elongate slot in one of the elements including the ejector and the plate and spaced studs in the other of said elements slidably received in the slot for guiding the ejector in movement, and means for actuating the ejector relative the plate between normal and operative positions of adjustment.

12. A test device as claimed in claim 11 in which the length of the slot and the spaced relation of the studs are calculated to bring one of the studs into one end of the slot when the ejector is in normal position and to bring the opposite stud into operative engagement with the opposite end of the stud when the ejector is in operated position to provide stops for the ejector in operated and normal positions of adjustment.

13. A test device as claimed in claim 11 which includes resilient means constantly urging the ejector towards normal position.

14. A test device as claimed in claim 11 which includes a resilient means operatively connected at one end to the ejector and at the other end to a displacement means whereby the resilient means is operative to urge the ejector toward operated position responsive to movement of said displacement means in one direction and to relieve the force urging the ejector towards operated position responsive to movement of the displacement means in the opposite direction.

15. A test device as claimed in claim 11 which includes a resilient means constantly urging the ejector towards normal position and a separate resilient means operatively connected at one end to the ejector and at the other end to a displacement means whereby the resilient means is operative to urge the ejector towards operated position in response to movement of said displacement means in one direction and to relieve the force urging the ejector towards operated position in response to movement of the displacement means in the opposite direction and wherein the first resilient means is dominated by the second resilient means when the displacement means is moved in the one direction and wherein the first resilient means dominates the second resilient means when the displacement means is moved in the opposite direction.

References Cited in the file of this patent UNITED STATES PATENTS 2,138,645 Rey Nov. 29, 1938 2,231,186 Gould Feb. 11, 1941 2,252,322 Knapp Aug. 12, 1941 2,646,717 Selgin July 28, 1953 2,731,621 Sontheimer Jan. 17, 1956 2,827,167 Joseph et al. Mar. 18, 1958 2,827,822 Timms Mar. 25, 1958 2,932,392 Burtner Apr. 12, 1960 2,936,684 Simjian May 17, 1960 FOREIGN PATENTS 123,649 Great Britain May 6, 1919 363,709 Germany Nov. 13, 1922 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. $108,692 October 29 1963 William A. Patzer It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 2, lines 5 and 6, strike out "now U S. Patent No 2,961,898" and insert instead now abandoned column 6 line 58 after "test" insert position Signed and sealed this 21st day of April 1964.

(SEAL) Attest:

ERNEST W. SWIDER EDWARD J. BRENNER Attesting Officer Commissioner of Patents 

1. A PAPER TEST DEVICE OF THE TYPE DESCRIBED HAVING A FIXED PAPER RECEIVING POSITION AND A FIXED TEST POSITION SPACED FROM THE PAPER RECEIVING POSITION, A MEANS FOR HOLDING THE PAPER IN THE TEST POSITION UNTIL A TEST THEREON HAS BEEN EVALUATED, MEANS FOR TESTING THE PAPER FOR ACCEPTABILITY, AND MEANS RESPONSIVE TO THE DETERMINATION OF THE ACCEPTABILITY OF THE PAPER BY SAID TESTS FOR EFFECTING REMOVAL OF THE PAPER FOUND TO BE ACCEPTABLE WHILE THE PAPER IS IN TEST POSITION AND MEANS FOR RELEASE OF SAID HOLDING MEANS IF THE PAPER IS FOUND TO BE UNACCEPTABLE, SAID MEANS FOR HOLDING THE PAPER IN THE TEST POSITION COMPRISING A SLIDE PLATE SHIFTABLE BETWEEN SAID PAPER RECEIVING AND SAID PAPER TEST POSITIONS, A LATCHING LEVER MOUNTED ON SAID TEST DEVICE, SAID LATCHING LEVER ENGAGING SAID SLIDE PLATE AND BEIGN SHIFTABLE BETWEEN A LATCHING POSITION AND AN UNLATCHING POSITION AND MEANS FOR ACTUATING THE LATCHING LEVER TO A LATCHING POSITION RESPONSIVE TO MOVEMENT OF THE SLIDE PLATE TO THE TEST POSITION WHEN A PAPER OF THE DESIRED DIMENSIONS IS DISPOSED IN SAID SLIDE PLATE. 